Nvidia (NVDA) rises 20% in seven sessions as Cerebras IPO tests AI chip demand

Nvidia Corp. (NVDA) rose 4.39% to $235.74 on May 14, 2026, lifting its market value above $5.7 trillion and extending a seven-session gain to 20% as investors continued to crowd into AI-linked chipmakers. The rally reflects sustained demand for semiconductor stocks tied to large-scale AI capital spending. The Philadelphia Semiconductor Index has climbed nearly 70% since late March, with Intel, Micron Technology, Advanced Micro Devices and Broadcom also posting strong gains. The move has raised concerns among some investors that U.S. equities are being driven by an AI bubble. Nvidia and Micron alone have accounted for more than 30% of the S&P 500’s year-to-date advance, according to Bloomberg data. Cerebras Systems, viewed as a potential Nvidia challenger, listed on May 14 in the largest U.S. IPO of 2026, surging as much as 109% intraday before closing up 68%.